Accession Number:

ADA409569

Title:

Large Eddy Simulation of Three Dimensional High Speed Aerodynamic Flows

Descriptive Note:

Final technical rept. 1 Dec 1998-31 Mar 2002

Corporate Author:

RUTGERS - THE STATE UNIV PISCATAWAY NJDEPT OF MECHANICAL AND AEROSPACE ENGINEERING

Personal Author(s):

Report Date:

2002-06-30

Pagination or Media Count:

40.0

Abstract:

An unstructured grid Large Eddy Simulation LES methodology has been developed for compressible high speed flows. The filtered compressible Navier-Stokes equations are solved on an unstructured grid of tetrahedra. The inviscid fluxes are obtained from an exact locally one-dimensional Riemann solver using Godunovs method. The viscous fluxes are obtained using a discrete analog of Gauss Theorem. The reconstruction is performed using a Least Squares technique. The temporal integration is a Runge-Kutta method. The algorithm is overall second order accurate in space and time. Four flow fields have been computed supersonic flat plate boundary layer, supersonic compression corner, supersonic expansion-compression corner and subsonic square jet. The computed results show close agreement with experiment and Direct Numerical Simulation, and validate the unstructured grid LES methodology.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE